Every morning during spring and summer in Mars’s southern hemisphere, a long white cloud appears downwind of the giant ...

Extreme cooling near Arsia Mons may let water vapor form ice particles directly, helping explain Mars’s striking morning ...

Mars Express can capture large stretches of the Martian surface at high resolution. Alongside ESA’s ExoMars Trace Gas Orbiter ...

A new study of the oddest cloud on Mars, which reappears every year at the Arsia Mons volcano, says that "exotic physics" is ...

Learn more about the AMEC, a strange, recurring cloud on Mars that has long baffled scientists, until now.

Clouds form when water vapor—an invisible gas in the atmosphere—sticks to tiny floating particles, such as dust, and turns into liquid water droplets or ice crystals. In a newly published study, we ...

Add Yahoo as a preferred source to see more of our stories on Google. Noctilucent clouds glow above the horizon after sunset. The rare clouds form nearly 50 miles above Earth's surface in the ...

Newswise — When a volcano erupts, it can spew ash high into the atmosphere — injecting aerosols right where clouds typically form. How exactly these aerosols impact cloud formation has long been a ...

The Arctic frequently experiences temperatures that support the formation of mixed-phase clouds that contain supercooled liquid droplets and ice crystals. The composition of such clouds plays a ...

Scientists have spotted microplastics, tiny pieces of plastic smaller than 5 millimeters, in some of the most pristine environments on Earth, from the depths of the Mariana Trench to the snow on Mt.

Rising temperatures are thought to reduce the number of ice crystals in clouds, leading to the formation of liquid-dominated clouds. However, a new study has found that Arctic warming is causing an ...